Did you check the fuel filter?Good Evening all. This pertains to the 440 in my 67 Chrysler. Stock rebuild with a very mild cam and a msd pro billet distributor and msd box.
The short of it is that I have a fuel issue at all speeds where I just seem to run out of fuel in the bowls and the car surges under load. The issue is intermittent and sometimes I have to manually fill the bowls up through the vent tube because cranking the engine doesn't get fuel into the bowls.
Two months ago I drove from Boston to Norfolk VA for work. Stayed there for 2 months, drove aound, no issues besides my ignitjon coil going bad. I then drove down to Jacksonville FL last week.
Halfway down to Jacksonville my engine started to surge at 75mph under throttle. Thought it was weird, couldn't fix it so I continued my drive because of a timeline i had to meet. Drove it until that night when it died on the on ramp and would not start back up. Had it towed and replaced my fuel pump the next day because I thought that's what it was "no fuel in the bowls." I also checked the needle and seat, there was some gunk in there.
I thought it was fixed but it wasn't. Made it to Florida though. I have been here a weeek and cant figure out wtf is going on. It is definitely a fuel issue. When the car dies and doesn't want to start I dump fuel from a Jerry can down the carb and it starts then it just dies. I have to manually fill the bowls through the vent tubs when it's acting up and it usually gets me back to base...
I have a FST carb (850 w/ vacuum secondaries) that I took apart last weekend and did only a thorough cleaning, found a bit of wire in one of the jets, I thought that was the issue... nope still surges but the 440 runs better now.
My gut tells me this is a bad needle and seat. Like the seat is getting stuck closed not letting fuel into the front bowl. This may explain why it's an intermittent issue. Thoughts?